Answer to Question #55822 in Algebra for Box Cars

Question

1: A rectangle's width is 6 feet less than its length. Writer a quadratic function that expresses the rectangle's area in terms of its length.

A: A(L) = L^2 - 6L

B: A(L) L^2 +6L

C: A(L) = LW

D: A(L) = L -6

2: A rectangle's width is 5 feet less than its length. If the area of the rectangle is 546 square feet, what is its length, in feet?

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3: A tennis ball machine serves a ball vertically into the air from the height of 2 feet, with an initial speed of 110 feet per second. Which equation correctly models the ball's height as a function of time?

A: h(t) = - 16t^2 -2t +110

B: h(t) = - 16t^2 + 110t + 2

C: h(t) = - 16t^2 – 110t +2

D: h(t) = -16t^2 +2t + 110